From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lf0-f42.google.com (mail-lf0-f42.google.com [209.85.215.42]) by kanga.kvack.org (Postfix) with ESMTP id AEF7C6B0258 for ; Mon, 25 Jan 2016 11:37:51 -0500 (EST) Received: by mail-lf0-f42.google.com with SMTP id m198so88338434lfm.0 for ; Mon, 25 Jan 2016 08:37:51 -0800 (PST) Received: from plane.gmane.org (plane.gmane.org. [80.91.229.3]) by mx.google.com with ESMTPS id 185si10239039lfa.168.2016.01.25.08.37.49 for (version=TLS1 cipher=AES128-SHA bits=128/128); Mon, 25 Jan 2016 08:37:49 -0800 (PST) Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1aNk9C-0005Tx-7a for linux-mm@kvack.org; Mon, 25 Jan 2016 17:37:47 +0100 Received: from 65-125-35-19.newmexicoconsortium.org ([65-125-35-19.newmexicoconsortium.org]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 25 Jan 2016 17:37:46 +0100 Received: from hugh by 65-125-35-19.newmexicoconsortium.org with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 25 Jan 2016 17:37:46 +0100 From: Hugh Greenberg Subject: Re: [REGRESSION] [BISECTED] kswapd high CPU usage Date: Mon, 25 Jan 2016 16:37:34 +0000 (UTC) Message-ID: References: <20160121161656.GA16564@node.shutemov.name> <20160125103853.GD11095@node.shutemov.name> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org Kirill A. Shutemov shutemov.name> writes: > > On Sat, Jan 23, 2016 at 03:57:21PM +0000, Hugh Greenberg wrote: > > Kirill A. Shutemov shutemov.name> writes: > > > > > > Could you try to insert "late_initcall(set_recommended_min_free_kbytes);" > > > back and check if makes any difference. > > > > > > > We tested adding late_initcall(set_recommended_min_free_kbytes); > > back in 4.1.14 and it made a huge difference. We aren't sure if the > > issue is 100% fixed, but it could be. We will keep testing it. > > It would be nice to have values of min_free_kbytes before and after > set_recommended_min_free_kbytes() in your configuration. > We'll try to get this for you. The reports are coming from 2GB Haswell chromebooks. I have a 4GB haswell chromebook and I cannot reproduce the issue, even if I boot the kernel with 2GB or less. After more testing, we were still able to reproduce the issue. It seems to have taken longer to show up this time. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org